PMID- 23498686 OWN - NLM STAT- MEDLINE DCOM- 20130917 LR - 20131121 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 770 DP - 2013 Apr 3 TI - A novel sensor based on electropolymerization of beta-cyclodextrin and L-arginine on carbon paste electrode for determination of fluoroquinolones. PG - 53-61 LID - S0003-2670(13)00200-6 [pii] LID - 10.1016/j.aca.2013.01.052 [doi] AB - An electrochemical sensor for fluoroquinolones (FQs) based on polymerization of beta-cyclodextrin (beta-CD) and L-arginine (L-arg) modified carbon paste electrode (CPE) (P-beta-CD-L-arg/CPE) was built for the first time. Synergistic effect of L-arg and beta-CD was used to construct this sensor for quantification of these important antibiotics. Scanning electron microscope (SEM) image shows that polymer of beta-CD and L-arg has been successfully modified on electrode. Electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV) further indicate that polymer of beta-CD and L-arg efficiently decreased the charge transfer resistance value of electrode and improved the electron transfer kinetic between analyte and electrode. Under the optimized conditions, this modified electrode was utilized to determine the concentrations of ciprofloxacin, ofloxacin, norfloxacin and gatifloxacin. The differential pulse voltammogram (DPV) exhibits the oxidation peak currents were linearly proportional to their concentration in the range of 0.05-100 muM for ciprofloxacin, 0.1-100 muM for ofloxacin, 0.1-40 muM for norfloxacin and 0.06-100 muM for gatifloxacin, respectively. This method was also successfully used to detect the concentrations of each drug in pharmaceutical formulations and human serum samples. In addition, this proposed fluoroquinolones sensor exhibited good reproducibility, long-term stability and fast current response. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Zhang, Fenfen AU - Zhang F AD - School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China. FAU - Gu, Shuqing AU - Gu S FAU - Ding, Yaping AU - Ding Y FAU - Zhang, Zhen AU - Zhang Z FAU - Li, Li AU - Li L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130208 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Acids) RN - 0 (Fluoroquinolones) RN - 0 (beta-Cyclodextrins) RN - 5E8K9I0O4U (Ciprofloxacin) RN - 7440-44-0 (Carbon) RN - 94ZLA3W45F (Arginine) SB - IM MH - Acids/chemistry MH - Arginine/*chemistry MH - Blood Chemical Analysis MH - Carbon/*chemistry MH - Ciprofloxacin/chemistry MH - Drug Stability MH - *Electrochemistry MH - Electrodes MH - Fluoroquinolones/*analysis MH - Humans MH - Microscopy, Electron, Scanning MH - Molecular Structure MH - Polymerization MH - Reproducibility of Results MH - beta-Cyclodextrins/blood/*chemistry EDAT- 2013/03/19 06:00 MHDA- 2013/09/18 06:00 CRDT- 2013/03/19 06:00 PHST- 2012/12/14 00:00 [received] PHST- 2013/01/24 00:00 [revised] PHST- 2013/01/28 00:00 [accepted] PHST- 2013/03/19 06:00 [entrez] PHST- 2013/03/19 06:00 [pubmed] PHST- 2013/09/18 06:00 [medline] AID - S0003-2670(13)00200-6 [pii] AID - 10.1016/j.aca.2013.01.052 [doi] PST - ppublish SO - Anal Chim Acta. 2013 Apr 3;770:53-61. doi: 10.1016/j.aca.2013.01.052. Epub 2013 Feb 8.